<html xmlns="http://www.w3.org/1999/xhtml" class="reftest-wait">

<head>
<script>
function boom()
{
  var math = document.getElementById("math");
  var div = document.getElementById("div")
  
  math.setAttribute("color", "g");
  document.body.appendChild(div);
  
  document.documentElement.removeAttribute("class");
}
</script>
</head>

<body onload="setTimeout(boom, 30);">

<div id="div">

<mo xmlns='http://www.w3.org/1998/Math/MathML'>+<math id="math"><mn>1</mn></math></mo>

</div>

</body>
</html>
